Question

Until the mid-20th century the largest impediment to trade between sahara desert and sahel was...

Answer 1

Answer: A) Climate

Explanation: Until the mid-20th century the largest impediment to trade between area "1" and area "2" on the map was climate. The Sahara Desert was a major impediment to trade. True, there were Trans-Saharan trade routes for centuries, but there is no denying that the desert was an inconvenience at the very least.